From: Chris Brenton <cbrenton@chrisbrenton.org>
To: Scott Hall <halls@aros.net>
Cc: netfilter@lists.netfilter.org
Subject: Re: icmp: 10.1.4.50 unreachable - need to frag (mtu 500) [tos 0xc0]
Date: Tue, 13 Jan 2004 10:51:02 -0500 [thread overview]
Message-ID: <1074009062.5742.222.camel@grendel> (raw)
In-Reply-To: <4003A62B.7020108@aros.net>
On Tue, 2004-01-13 at 03:02, Scott Hall wrote:
> So the one question that this whole issue raises in my mind is, Isn't
> there anyway to handle the (DF) packets differently?
Absolutely. Config the stacks on both ends of the connection to _not_
set DF. This will cause the router at the MTU border to frag the packets
and will not require an ICMP error packet.
> I ask
> becuase we have two cisco routers and 6 Adtran routers that handle this
> same scenario quietly.
I'm guessing if you check the decodes from those packets you will see
the public rather than the private IP embedded in the payload. I think
this is what is killing you. This is an old Netfilter bug that I
*thought* was fixed ages ago.
HTH,
C
next prev parent reply other threads:[~2004-01-13 15:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-06 7:07 icmp: 10.1.4.50 unreachable - need to frag (mtu 500) [tos 0xc0] Scott Hall
2004-01-06 11:23 ` Chris Brenton
2004-01-06 15:48 ` Scott Hall
2004-01-13 8:02 ` Scott Hall
2004-01-13 15:51 ` Chris Brenton [this message]
2004-01-13 16:12 ` Scott Hall
2004-01-13 16:38 ` Chris Brenton
2004-01-13 17:52 ` Scott Hall
2004-01-14 18:11 ` Mark Weaver
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